What is considered the heart of the chlorinator?

• A. Injector
• B. Regulator
• C. Mixer
• D. Meter

Answer: (A)

The injector is the heart of the chlorinator because it is the component that actually introduces the disinfectant into the water. It uses the Venturi effect: as water flows through a narrow throat, it creates suction that pulls chlorine solution from the chemical feed into the stream, delivering the dose in real time and initiating thorough mixing. The dose is essentially determined by this suction action tied to the flow, so the injector controls the core function of dosing.

The other parts play supporting roles: the regulator helps maintain stable pressure to the injection point, the mixer promotes uniform contact between chlorine and water, and the meter checks the chlorine residual to ensure the dose is correct. But the injector is the mechanism that makes dosing possible in the first place.